上一章節(jié)我們講了如何創(chuàng)建數(shù)據(jù)庫,接下來我們來討論如何去選擇我們創(chuàng)建的數(shù)據(jù)庫。
PostgreSQL 命令窗口中,我們可以命令提示符后面輸入 SQL 語句:
postgres=#
使用 \l 用于查看已經(jīng)存在的數(shù)據(jù)庫:
postgres=# \l List of databases Name | Owner | Encoding | Collate | Ctype | Access privileges -----------+----------+----------+---------+-------+----------------------- postgres | postgres | UTF8 | C | C | nhooodb | postgres | UTF8 | C | C | template0 | postgres | UTF8 | C | C | =c/postgres + | | | | | postgres=CTc/postgres template1 | postgres | UTF8 | C | C | =c/postgres + | | | | | postgres=CTc/postgres (4 rows)
接下來我們可以使用 \c + 數(shù)據(jù)庫名 來進入數(shù)據(jù)庫:
postgres=# \c nhooodb You are now connected to database "nhooodb" as user "postgres". nhooodb=#
在系統(tǒng)的命令行查看,我么可以在連接數(shù)據(jù)庫后面添加數(shù)據(jù)庫名來選擇數(shù)據(jù)庫:
$ psql -h localhost -p 5432 -U postgress nhooodb Password for user postgress: **** psql (11.3) Type "help" for help. You are now connected to database "nhooodb" as user "postgres". nhooodb=#
pgAdmin 工具更簡單了,直接點擊數(shù)據(jù)庫選擇就好了,還可以查看一些數(shù)據(jù)庫額外的信息: